Cheap Flights from Idaho Falls to Denver International

Compare Idaho Falls to Denver International flight deals

Find the cheapest month or even day of the year to fly to Denver International

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Flight deals from Idaho Falls to Denver International

Looking for a cheap last-minute deal or the best return flight from Idaho Falls to Denver International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Idaho Falls to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Idaho Falls to Denver International flights are currently cheapest in January.

Direct flights from Idaho Falls to Denver International

Idaho Falls to Denver International: Alternative routes

Compare routes from Idaho Falls to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Idaho Falls to Denver: Flight information

The things to know before you go.
Cheapest flight foundR 1,508
Cheapest month to flyJanuary
Average flight time1 hr, 54 mins
Most popular airlineUnited
Average flights per week76

Finding cheap flights from Idaho Falls to Denver International: Frequently asked questions

The best price we found for a return flight from Idaho Falls to Denver International is R 3,165. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 54 minutes is the average flight time from Idaho Falls to Denver International.
United, SkyWest Airlines and Copa fly direct from Idaho Falls to Denver International.
As of December 2025, there are 76 flights per week flying from Idaho Falls to Denver International.
The cheapest month to fly from Idaho Falls to Denver International is usually January.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Idaho Falls Airport to Denver International Airport on Thursday, 22 January 2026.
Yes – the average flight time is 1 hour and 54 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to Denver International.

Travelling from Idaho Falls Regional Airport (IDA) to Denver International Airport (DEN): what you need to know

  • Around 1 hour 45 minutes is how long you can expect to be travelling on a direct flight from Idaho Falls Regional Airport to Denver International Airport.

  • Idaho Falls and Denver are in the UTC-6 timezone. That means you won't have to adjust your watch after you land.

  • Flights from IDA to DEN start from 07:00 — the earliest with United Airlines. The last service of the day is at 17:59 with United Airlines. Overall, you can choose from 40 weekly Idaho Falls Regional Airport to Denver International Airport flights.

  • Your IDA to DEN flight won't wait if you're running late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • Be prepared for longer queues in popular months such as July. Arriving up to four hours ahead of international flights and two hours for a domestic departure is a wise move.

  • Flying into Denver (and then seeing more of United States!) is a breeze with United Airlines. This popular carrier has direct flights from Idaho Falls Regional Airport to Denver International Airport.

  • Most travellers choose to fly with United Airlines on this route.

  • United Airlines is a leader in on-time performance for IDA to DEN flights, with 81.74% of services landing on schedule.

  • Think about adding a stopover when booking your ticket from Idaho Falls Regional Airport to Denver International Airport. Simply deselect 'Direct flights only' to break up your trip, or maybe even explore a new city along the way. Here are some options between IDA and DEN:

    • Salt Lake City International Airport

    • Phoenix Sky Harbour International Airport

    • John Wayne Airport

How to find the cheapest flights from Idaho Falls Regional Airport (IDA) to Denver International Airport (DEN)

  • Currently, R 1,508 is the cheapest price we've seen for a one-way Idaho Falls Regional Airport to Denver International Airport flight. The best price for a return ticket is R 3,165. Bear in mind that fares may change due to availability when booking.

  • Get cheap tickets from IDA to DEN by booking at least seven months ahead. Based on our research, that's the sweet spot for finding a bargain.

  • June is the cheapest month for flights from Idaho Falls Regional Airport to Denver International Airport. If you need to fly at a different time of year, the 'Whole month' tool will show you the lowest airfares for each month.

  • Save time looking for cheap flights from IDA to DEN by creating a Price Alert. You'll receive an email or push notification on the app when a special offer becomes available.

  • Tailor your flights with filters. Pick your preferred arrival and departure times, total journey duration and airlines. You can also sort your results by 'Cheapest,' 'Best' or 'Fastest' flights from Idaho Falls Regional Airport to Denver International Airport.

Handy information about Idaho Falls Regional Airport (IDA)

  • The address for IDA is 2140 North Skyline.

  • Idaho Falls Regional Airport has a strong on-time performance, reducing the likelihood of delays. Departures from IDA land on schedule 80.03% of the time.

  • To reach Idaho Falls Regional Airport from central Idaho Falls, it takes about 10 minutes if you're going by car. Of course, this depends on traffic. It's approximately 5 kilometres from the airport to the city centre.

  • Expect a journey time of about 1 hour when using public transport.

  • Catching an early flight from Idaho Falls Regional Airport to Denver International Airport? Avoid the stress of rushing to the airport (and get some extra shut-eye) by picking one of these hotels close to IDA:

Arriving at Denver International Airport (DEN)

  • Hop off your Idaho Falls Regional Airport to Denver International Airport flight and be in your hotel bed soon after. If you're looking for a comfy option within easy reach of DEN, unpack your bags at Baymont by Wyndham Denver International Airport.

  • Explore without limits with a Denver International Airport rental car. Pick up your wheels from Routes Car Rentals, Dollar or Budget and discover more of Denver and beyond.

  • Lock in the lowest price by reserving your ride from Denver International Airport around one week ahead of your trip.

Getting from Denver International Airport (DEN) to central Denver

  • DEN is located at 8500 Pena Boulevard.

  • From Denver International Airport, Denver is approximately 40 kilometres away. It takes around 35 minutes to reach the centre by car.

  • It'll take around 1 hour 30 minutes if you're using public transport.

When to fly to Denver International Airport (DEN)

  • July is the busiest month for flights from Idaho Falls Regional Airport to Denver International Airport. For smaller crowds, head to Denver in April.

  • When reserving your flight from Idaho Falls Regional Airport to Denver International Airport, think about the type of weather you enjoy. July is the warmest month in Denver, with temperatures ranging from 14ºC (57ºF) to 32ºC (90ºF).

  • If you want cooler conditions, look for a cheap ticket from IDA to DEN in January. Average temperatures are between -9ºC (16ºF) and 7ºC (45ºF) then.

Explore more of United States

  • Denver has plenty to offer, but there are so many other corners of United States just waiting to be explored. About 105 kilometres south of Denver, a visit to Colorado Springs will keep you busy. Start with popular sights like US Northern Command (USNORTHCOM) / North American Aerospace Defence Command (NORAD) Headquarters, Cheyenne Mountain Air Force Station and National Strength and Conditioning Association (NSCA).

  • If you're ready to explore another major stop in United States, consider Aurora, about 13 kilometres east of Denver. Magellan's Travel Solutions and Gear, The Fairways at Lowry and Retired Enlisted Association Inc are highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.